Nice Looking London Underground Subway Mind The Gap 90’s Y2k VTG Long Sleeve T-Shirt Size Medium. If you ever had the adventure of traveling on London’s epic old school The Underground Subway system. You heard the pleasant yet funny Mind The Gap saying. Is in good condition. Graphics have some cracking/fading, but still look good. Is on a Port & Company tag. Has been in a smoke free home. Measurements: Pit To Pit 17”, and length 24”.